class TestCommonUsage(TestCase):
def setUp(self):
self.cache = Cache(3)
self.cache['A'] = 0
self.cache['B'] = 1
self.cache['C'] = 2
def test_basic(self):
self.assertEqual(repr(self.cache), "{'A': 0, 'C': 2, 'B': 1}")
self.assertEqual(len(self.cache), 3)
self.assertEqual(self.cache['A'], 0)
def test_overflow(self):
self.cache['D'] = 3
self.assertEqual(len(self.cache), 3)
self.assertFalse('A' in self.cache)
def test_sort(self):
self.cache['E'] = 4
self.cache['B']
self.assertEqual([i for i in self.cache], ['B', 'E', 'C'])
def test_reassignment(self):
self.cache['A'] = 5
self.assertEqual(self.cache['A'], 5)
self.assertEqual([i for i in self.cache], ['A', 'C', 'B'])
self.cache['C'] = 6
self.assertEqual(self.cache['C'], 6)
self.assertEqual([i for i in self.cache], ['C', 'A', 'B'])
def test_capacity(self):
self.cache.capacity = 1
self.cache._restrict()
self.assertEqual(len(self.cache), 1)
self.assertFalse('A' in self.cache)
self.assertTrue('C' in self.cache)
self.cache['A'] = 0
self.assertEqual(len(self.cache), 1)
self.assertTrue('A' in self.cache)
self.assertFalse('C' in self.cache)
self.cache.capacity = 0
self.cache._restrict()
self.assertEqual(len(self.cache), 0)
def setUp(self):
self.cache = Cache(3)
self.cache['A'] = 0
self.cache['B'] = 1
self.cache['C'] = 2